diff --git a/compiler/rustc_interface/src/interface.rs b/compiler/rustc_interface/src/interface.rs
index 71d59c76dbc..59b89ce01a6 100644
--- a/compiler/rustc_interface/src/interface.rs
+++ b/compiler/rustc_interface/src/interface.rs
@@ -275,58 +275,6 @@ pub struct Config {
     pub registry: Registry,
 }
 
-fn create_compiler_and_run<R>(config: Config, f: impl FnOnce(&Compiler) -> R) -> R {
-    crate::callbacks::setup_callbacks();
-
-    let registry = &config.registry;
-    let (mut sess, codegen_backend) = util::create_session(
-        config.opts,
-        config.crate_cfg,
-        config.crate_check_cfg,
-        config.file_loader,
-        config.input_path.clone(),
-        config.lint_caps,
-        config.make_codegen_backend,
-        registry.clone(),
-    );
-
-    if let Some(parse_sess_created) = config.parse_sess_created {
-        parse_sess_created(
-            &mut Lrc::get_mut(&mut sess)
-                .expect("create_session() should never share the returned session")
-                .parse_sess,
-        );
-    }
-
-    let temps_dir = sess.opts.unstable_opts.temps_dir.as_ref().map(|o| PathBuf::from(&o));
-
-    let compiler = Compiler {
-        sess,
-        codegen_backend,
-        input: config.input,
-        input_path: config.input_path,
-        output_dir: config.output_dir,
-        output_file: config.output_file,
-        temps_dir,
-        register_lints: config.register_lints,
-        override_queries: config.override_queries,
-    };
-
-    rustc_span::with_source_map(compiler.sess.parse_sess.clone_source_map(), move || {
-        let r = {
-            let _sess_abort_error = OnDrop(|| {
-                compiler.sess.finish_diagnostics(registry);
-            });
-
-            f(&compiler)
-        };
-
-        let prof = compiler.sess.prof.clone();
-        prof.generic_activity("drop_compiler").run(move || drop(compiler));
-        r
-    })
-}
-
 // JUSTIFICATION: before session exists, only config
 #[allow(rustc::bad_opt_access)]
 pub fn run_compiler<R: Send>(config: Config, f: impl FnOnce(&Compiler) -> R + Send) -> R {
@@ -334,7 +282,57 @@ pub fn run_compiler<R: Send>(config: Config, f: impl FnOnce(&Compiler) -> R + Se
     util::run_in_thread_pool_with_globals(
         config.opts.edition,
         config.opts.unstable_opts.threads,
-        || create_compiler_and_run(config, f),
+        || {
+            crate::callbacks::setup_callbacks();
+
+            let registry = &config.registry;
+            let (mut sess, codegen_backend) = util::create_session(
+                config.opts,
+                config.crate_cfg,
+                config.crate_check_cfg,
+                config.file_loader,
+                config.input_path.clone(),
+                config.lint_caps,
+                config.make_codegen_backend,
+                registry.clone(),
+            );
+
+            if let Some(parse_sess_created) = config.parse_sess_created {
+                parse_sess_created(
+                    &mut Lrc::get_mut(&mut sess)
+                        .expect("create_session() should never share the returned session")
+                        .parse_sess,
+                );
+            }
+
+            let temps_dir = sess.opts.unstable_opts.temps_dir.as_ref().map(|o| PathBuf::from(&o));
+
+            let compiler = Compiler {
+                sess,
+                codegen_backend,
+                input: config.input,
+                input_path: config.input_path,
+                output_dir: config.output_dir,
+                output_file: config.output_file,
+                temps_dir,
+                register_lints: config.register_lints,
+                override_queries: config.override_queries,
+            };
+
+            rustc_span::with_source_map(compiler.sess.parse_sess.clone_source_map(), move || {
+                let r = {
+                    let _sess_abort_error = OnDrop(|| {
+                        compiler.sess.finish_diagnostics(registry);
+                    });
+
+                    f(&compiler)
+                };
+
+                let prof = compiler.sess.prof.clone();
+                prof.generic_activity("drop_compiler").run(move || drop(compiler));
+                r
+            })
+        },
     )
 }